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M48Z02 M48Z12
5V, 16 Kbit (2Kb x 8) ZEROPOWER(R) SRAM
FEATURES SUMMARY s INTEGRATED, ULTRA LOW POWER SRAM and POWER-FAIL CONTROL CIRCUIT
s s
Figure 1. 24-pin CAPHAT, DIP Package
UNLIMITED WRITE CYCLES READ CYCLE TIME EQUALS WRITE CYCLE TIME AUTOMATIC POWER-FAIL CHIP DESELECT and WRITE PROTECTION WRITE PROTECT VOLTAGES (VPFD = Power-fail Deselect Voltage): - M48Z02: VCC = 4.75 to 5.5V; 4.5V VPFD 4.75V - M48Z12: VCC = 4.5 to 5.5V; 4.2V VPFD 4.5V SELF-CONTAINED BATTERY IN THE CAPHATTM DIP PACKAGE PIN and FUNCTION COMPATIBLE WITH JEDEC STANDARD 2K x 8 SRAMs
24 1
s
s
PCDIP24 (PC) Battery/Crystal CAPHAT
s
s
April 2003
Rev. 3.1
1/16
M48Z02, M48Z12
TABLE OF CONTENTS SUMMARY DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Figure 2. Logic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 1. Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3. DIP Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 4. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....3 .....3 .....3 .....4
MAXIMUM RATING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Table 2. Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 DC AND AC PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 3. Operating and AC Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 5. AC Testing Load Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 4. Capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 5. DC Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 OPERATION MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 6. Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 READ Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 6. READ Mode AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 7. READ Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 WRITE Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 7. WRITE Enable Controlled, WRITE AC Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 8. Chip Enable Controlled, WRITE AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 8. WRITE Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Data Retention Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 9. Checking the BOK Flag Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 10. Power Down/Up Mode AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table 9. Power Down/Up AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 10. Power Down/Up Trip Points DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 11. Crystal Accuracy Across Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 VCC Noise And Negative Going Transients. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 12. Supply Voltage Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 PACKAGE MECHANICAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 REVISION HISTORY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
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M48Z02, M48Z12
SUMMARY DESCRIPTION The M48Z02/12 ZEROPOWER(R) RAM is a 2K x 8 non-volatile static RAM which is pin and functional compatible with the DS1220. A special 24-pin, 600mil DIP CAPHATTM package houses the M48Z02/12 silicon with a long life lithium button cell to form a highly integrated battery backed-up memory solution. The M48Z02/12 button cell has sufficient capacity and storage life to maintain data functionality for an accumulated time period of at least 10 years in Figure 2. Logic Diagram
VCC
the absence of power over commercial operating temperature range. The M48Z02/12 is a non-volatile pin and function equivalent to any JEDEC standard 2K x 8 SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets, providing the non-volatility of PROMs without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed.
Table 1. Signal Names
A0-A10 DQ0-DQ7 Address Inputs Data Inputs / Outputs Chip Enable Output Enable WRITE Enable Supply Voltage Ground
11 A0-A10
8 DQ0-DQ7
E G W VCC VSS
W E G
M48Z02 M48Z12
VSS
AI01186
Figure 3. DIP Connections
A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS 24 1 23 2 22 3 21 4 20 5 6 M48Z02 19 M48Z12 18 7 17 8 16 9 15 10 11 14 12 13
AI01187
VCC A8 A9 W G A10 E DQ7 DQ6 DQ5 DQ4 DQ3
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M48Z02, M48Z12
Figure 4. Block Diagram
A0-A10
LITHIUM CELL VOLTAGE SENSE AND SWITCHING CIRCUITRY
POWER
2K x 8 SRAM ARRAY
DQ0-DQ7
VPFD
E W G
VCC
VSS
AI01255
MAXIMUM RATING Stressing the device above the rating listed in the "Absolute Maximum Ratings" table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is Table 2. Absolute Maximum Ratings
Symbol TA TSTG TSLD(1) VIO VCC IO PD Parameter
not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents.
Value Grade 1 0 to 70 -40 to 85 -40 to 85 260 -0.3 to 7 -0.3 to 7 20 1
Unit C
Ambient Operating Temperature Grade 6 Storage Temperature (VCC Off, Oscillator Off) Lead Solder Temperature for 10 seconds Input or Output Voltages Supply Voltage Output Current Power Dissipation C C V V mA W
Note: 1. Soldering temperature not to exceed 260C for 10 seconds (total thermal budget not to exceed 150C for longer than 30 seconds).
CAUTION: Negative undershoots below -0.3V are not allowed on any pin while in the Battery Back-up mode.
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M48Z02, M48Z12
DC AND AC PARAMETERS This section summarizes the operating and measurement conditions, as well as the DC and AC characteristics of the device. The parameters in the following DC and AC Characteristic tables are derived from tests performed under the Measure-
ment Conditions listed in the relevant tables. Designers should check that the operating conditions in their projects match the measurement conditions when using the quoted parameters.
Table 3. Operating and AC Measurement Conditions
Parameter Supply Voltage (VCC) Grade 1 Ambient Operating Temperature (TA) Load Capacitance (CL) Input Rise and Fall Times Input Pulse Voltages Input and Output Timing Ref. Voltages
Note: Output Hi-Z is defined as the point where data is no longer driven.
M48Z02 4.75 to 5.5 0 to 70 - 100 5 0 to 3 1.5
M48Z12 4.5 to 5.5 0 to 70 -40 to 85 100 5 0 to 3 1.5
Unit V C C pF ns V V
Grade 6
Figure 5. AC Testing Load Circuit
5V
1.8k DEVICE UNDER TEST 1k
OUT
CL = 100pF
CL includes JIG capacitance
AI01019
Table 4. Capacitance
Symbol CIN CIO(3) Input Capacitance Input / Output Capacitance Parameter(1,2) Min Max 10 10 Unit pF pF
Note: 1. Effective capacitance measured with power supply at 5V. Sampled only, not 100% tested. 2. At 25C, f = 1MHz. 3. Outputs deselected.
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M48Z02, M48Z12
Table 5. DC Characteristics
Symbol ILI ILO(2) ICC ICC1 ICC2 VIL(3) VIH VOL VOH Parameter Input Leakage Current Output Leakage Current Supply Current Supply Current (Standby) TTL Supply Current (Standby) CMOS Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage IOL = 2.1mA IOH = -1mA 2.4 Test Condition(1) 0V VIN VCC 0V VOUT VCC Outputs open E = VIH E = VCC - 0.2V -0.3 2.2 Min Max 1 1 80 3 3 0.8 VCC + 0.3 0.4 Unit A A mA mA mA V V V V
Note: 1. Valid for Ambient Operating Temperature: TA = 0 to 70C or -40 to 85C; VCC = 4.75 to 5.5V or 4.5 to 5.5V (except where noted). 2. Outputs deselected. 3. Negative spikes of -1V allowed for up to 10ns once per Cycle.
OPERATION MODES The M48Z02/12 also has its own Power-fail Detect circuit. The control circuitry constantly monitors the single 5V supply for an out of tolerance condition. When VCC is out of tolerance, the circuit write protects the SRAM, providing a high degree of Table 6. Operating Modes
Mode Deselect WRITE READ READ Deselect Deselect VSO to VPFD(min)(1) VSO(1) 4.75 to 5.5V or 4.5 to 5.5V VCC E VIH VIL VIL VIL X X G X X VIL VIH X X
data security in the midst of unpredictable system operation brought on by low VCC. As VCC falls below approximately 3V, the control circuitry connects the battery which maintains data operation until valid power returns.
W X VIL VIH VIH X X
DQ0-DQ7 High Z DIN DOUT High Z High Z High Z
Power Standby Active Active Active CMOS Standby Battery Back-up Mode
Note: X = VIH or VIL; VSO = Battery Back-up Switchover Voltage. 1. See Table 10, page 11 for details.
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M48Z02, M48Z12
READ Mode The M48Z02/12 is in the READ Mode whenever W (WRITE Enable) is high and E (Chip Enable) is low. The device architecture allows ripple-through access of data from eight of 16,384 locations in the static storage array. Thus, the unique address specified by the 11 Address Inputs defines which one of the 2,048 bytes of data is to be accessed. Valid data will be available at the Data I/O pins within Address Access time (tAVQV) after the last address input signal is stable, providing that the E and G access times are also satisfied. If the E and G access times are not met, valid data will be Figure 6. READ Mode AC Waveforms
tAVAV A0-A10 tAVQV tELQV E tELQX tGLQV G tGLQX DQ0-DQ7 VALID
AI01330
available after the latter of the Chip Enable Access time (tELQV) or Output Enable Access time (tGLQV). The state of the eight three-state Data I/O signals is controlled by E and G. If the outputs are activated before tAVQV, the data lines will be driven to an indeterminate state until tAVQV. If the Address Inputs are changed while E and G remain active, output data will remain valid for Output Data Hold time (tAXQX) but will go indeterminate until the next Address Access.
VALID tAXQX tEHQZ
tGHQZ
Note: WRITE Enable (W) = High.
Table 7. READ Mode AC Characteristics
M48Z02/M48Z12 Symbol Parameter(1) Min tAVAV tAVQV tELQV tGLQV tELQX tGLQX tEHQZ tGHQZ tAXQX READ Cycle Time Address Valid to Output Valid Chip Enable Low to Output Valid Output Enable Low to Output Valid Chip Enable Low to Output Transition Output Enable Low to Output Transition Chip Enable High to Output Hi-Z Output Enable High to Output Hi-Z Address Transition to Output Transition 10 5 5 25 25 5 70 70 70 35 10 5 35 35 5 -70 Max -150 Min 150 150 150 75 10 5 40 40 Max -200 Min 200 200 200 80 Max ns ns ns ns ns ns ns ns ns Unit
Note: 1. Valid for Ambient Operating Temperature: TA = 0 to 70C or -40 to 85C; VCC = 4.75 to 5.5V or 4.5 to 5.5V (except where noted).
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M48Z02, M48Z12
WRITE Mode The M48Z02/12 is in the WRITE Mode whenever W and E are active. The start of a WRITE is referenced from the latter occurring falling edge of W or E. A WRITE is terminated by the earlier rising edge of W or E. The addresses must be held valid throughout the cycle. E or W must return high for a minimum of tEHAX from Chip Enable or tWHAX from WRITE Enable prior to the initiation of anoth-
er READ or WRITE cycle. Data-in must be valid tDVWH prior to the end of WRITE and remain valid for tWHDX afterward. G should be kept high during WRITE cycles to avoid bus contention; although, if the output bus has been activated by a low on E and G, a low on W will disable the outputs tWLQZ after W falls.
Figure 7. WRITE Enable Controlled, WRITE AC Waveform
tAVAV A0-A10 VALID tAVWH tAVEL E tWLWH tAVWL W tWLQZ tWHDX DQ0-DQ7 DATA INPUT tDVWH
AI01331
tWHAX
tWHQX
Figure 8. Chip Enable Controlled, WRITE AC Waveforms
tAVAV A0-A10 VALID tAVEH tAVEL E tAVWL W tEHDX DQ0-DQ7 DATA INPUT tDVEH
AI01332B
tELEH
tEHAX
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M48Z02, M48Z12
Table 8. WRITE Mode AC Characteristics
M48Z02/M48Z12 Symbol Parameter(1) -70 Min tAVAV tAVWL tAVEL tWLWH tELEH tWHAX tEHAX tDVWH tDVEH tWHDX tEHDX tWLQZ tAVWH tAVEH tWHQX WRITE Cycle Time Address Valid to WRITE Enable Low Address Valid to Chip Enable 1 Low WRITE Enable Pulse Width Chip Enable Low to Chip Enable 1 High WRITE Enable High to Address Transition Chip Enable High to Address Transition Input Valid to WRITE Enable High Input Valid to Chip Enable High WRITE Enable High to Input Transition Chip Enable High to Input Transition WRITE Enable Low to Output Hi-Z Address Valid to WRITE Enable High Address Valid to Chip Enable High WRITE Enable High to Output Transition 60 60 5 70 0 0 50 55 0 0 30 30 5 5 25 120 120 10 Max -150 Min 150 0 0 90 90 10 10 40 40 5 5 50 140 140 10 Max -200 Min 200 0 0 120 120 10 10 60 60 5 5 60 Max ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Unit
Note: 1. Valid for Ambient Operating Temperature: TA = 0 to 70C or -40 to 85C; VCC = 4.75 to 5.5V or 4.5 to 5.5V (except where noted).
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M48Z02, M48Z12
Data Retention Mode With valid VCC applied, the M48Z02/12 operates as a conventional BYTEWIDETM static RAM. Should the supply voltage decay, the RAM will automatically power-fail deselect, write protecting itself when VCC falls within the VPFD (max), VPFD (min) window. All outputs become high impedance, and all inputs are treated as "don't care." Note: A power failure during a WRITE cycle may corrupt data at the currently addressed location, but does not jeopardize the rest of the RAM's content. At voltages below VPFD (min), the user can be assured the memory will be in a write protected state, provided the VCC fall time is not less than tF. The M48Z02/12 may respond to transient noise spikes on VCC that reach into the deselect window during the time the device is sampling VCC. Therefore, decoupling of the power supply lines is recommended. The power switching circuit connects external VCC to the RAM and disconnects the battery when VCC rises above VSO. As VCC rises, the battery voltage is checked. If the voltage is too low, an internal Battery Not OK (BOK) flag will be set. The BOK flag can be checked after power up. If the BOK flag is set, the first WRITE attempted will be blocked. The flag is automatically cleared after the first WRITE, and normal RAM operation resumes. Figure 9 illustrates how a BOK check routine could be structured. For more information on a Battery Storage Life refer to the Application Note AN1012. Figure 9. Checking the BOK Flag Status
POWER-UP
READ DATA AT ANY ADDRESS
WRITE DATA COMPLEMENT BACK TO SAME ADDRESS
READ DATA AT SAME ADDRESS AGAIN
IS DATA COMPLEMENT OF FIRST READ? (BATTERY OK) YES
NO (BATTERY LOW)
NOTIFY SYSTEM OF LOW BATTERY (DATA MAY BE CORRUPTED)
WRITE ORIGINAL DATA BACK TO SAME ADDRESS
CONTINUE
AI00607
Figure 10. Power Down/Up Mode AC Waveforms
VCC VPFD (max) VPFD (min) VSO tF tPD INPUTS
RECOGNIZED
tDR tFB tRB DON'T CARE
tR tREC
NOTE RECOGNIZED
HIGH-Z OUTPUTS VALID
(PER CONTROL INPUT)
VALID
(PER CONTROL INPUT)
AI00606
Note: Inputs may or may not be recognized at this time. Caution should be taken to keep E high as VCC rises past VPFD (min). Some systems may perform inadvertent WRITE cycles after VCC rises above VPFD (min) but before normal system operations begin. Even though a power on reset is being applied to the processor, a reset condition may not occur until after the system is running.
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M48Z02, M48Z12
Table 9. Power Down/Up AC Characteristics
Symbol tPD tF(2) tFB(3) tR tRB tREC Parameter(1) E or W at VIH before Power Down VPFD (max) to VPFD (min) VCC Fall Time VPFD (min) to VSS VCC Fall Time VPFD (min) to VPFD (max) VCC Rise Time VSS to VPFD (min) VCC Rise Time E or W at VIH after Power Up Min 0 300 10 0 1 2 Max Unit s s s s s ms
Note: 1. Valid for Ambient Operating Temperature: TA = 0 to 70C or -40 to 85C; VCC = 4.75 to 5.5V or 4.5 to 5.5V (except where noted). 2. VPFD (max) to VPFD (min) fall time of less than tF may result in deselection/write protection not occurring until 200s after VCC passes VPFD (min). 3. VPFD (min) to VSS fall time of less than tFB may cause corruption of RAM data.
Table 10. Power Down/Up Trip Points DC Characteristics
Symbol VPFD VSO tDR(3) Parameter(1,2) M48Z02 Power-fail Deselect Voltage M48Z12 Battery Back-up Switchover Voltage Expected Data Retention Time 10 4.2 4.3 3.0 4.5 V V YEARS Min 4.5 Typ 4.6 Max 4.75 Unit V
Note: 1. All voltages referenced to VSS. 2. Valid for Ambient Operating Temperature: TA = 0 to 70C or -40 to 85C; VCC = 4.75 to 5.5V or 4.5 to 5.5V (except where noted). 3. At 25C, VCC = 0V.
Figure 11. Crystal Accuracy Across Temperature
ppm 20
0
-20
-40 F = -0.038 ppm (T - T )2 10% 0 F C2 T0 = 25 C -80
-60
-100 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 C
AI02124
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M48Z02, M48Z12
VCC Noise And Negative Going Transients ICC transients, including those produced by output switching, can produce voltage fluctuations, resulting in spikes on the VCC bus. These transients can be reduced if capacitors are used to store energy which stabilizes the VCC bus. The energy stored in the bypass capacitors will be released as low going spikes are generated or energy will be absorbed when overshoots occur. A ceramic bypass capacitor value of 0.1F (as shown in Figure 12) is recommended in order to provide the needed filtering. In addition to transients that are caused by normal SRAM operation, power cycling can generate negative voltage spikes on VCC that drive it to values below VSS by as much as one volt. These negative spikes can cause data corruption in the SRAM while in battery backup mode. To protect from these voltage spikes, STMicroelectronics recommends connecting a schottky diode from VCC to VSS (cathode connected to VCC, anode to VSS). Schottky diode 1N5817 is recommended for through hole and MBRS120T3 is recommended for surface mount. Figure 12. Supply Voltage Protection
VCC VCC
0.1F
DEVICE
VSS
AI02169
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M48Z02, M48Z12
PACKAGE MECHANICAL INFORMATION Figure 13. PCDIP24 - 24-pin Plastic DIP, Battery CAPHATTM, Package Outline
A2
A
A1 B1 B e3 D
N
L eA
C
e1
E
1 PCDIP
Note: Drawing is not to scale.
Table 11. PCDIP24 - 24-pin Plastic DIP, Battery CAPHATTM, Package Mechanical Data
mm Symb Typ A A1 A2 B B1 C D E e1 e3 eA L N Min 8.89 0.38 8.38 0.38 1.14 0.20 34.29 17.83 2.29 25.15 15.24 3.05 24 Max 9.65 0.76 8.89 0.53 1.78 0.31 34.80 18.34 2.79 30.73 16.00 3.81 Typ Min 0.350 0.015 0.330 0.015 0.045 0.008 1.350 0.702 0.090 0.990 0.600 0.120 24 Max 0.380 0.030 0.350 0.021 0.070 0.012 1.370 0.722 0.110 1.210 0.630 0.150 inches
13/16
M48Z02, M48Z12
PART NUMBERING Table 12. Ordering Information Scheme
Example: M48Z 02 -70 PC 1 TR
Device Type M48Z
Supply Voltage and Write Protect Voltage 02 = VCC = 4.75 to 5.5V; VPFD = 4.5 to 4.75V 12 = VCC = 4.5 to 5.5V; VPFD = 4.2 to 4.5V
Speed -70 = 70ns (M48Z02/12) -150 = 150ns (M48Z02/12) -200 = 200ns (M48Z02/12)
Package PC = PCDIP24
Temperature Range 1 = 0 to 70C 6 = -40 to 85C
Shipping Method blank = Tubes TR = Tape & Reel
For a list of available options (e.g., Speed, Package) or for further information on any aspect of this device, please contact the ST Sales Office nearest you.
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M48Z02, M48Z12
REVISION HISTORY Table 13. Document Revision History
Date May 1999 09-Jul-01 17-Dec-01 20-May-02 01-Apr-03 22-Apr-03 Rev. # 1.0 2.0 2.1 2.2 3.0 3.1 First issue Reformatted; Temperature information added to tables (Table 2, 3, 4, 5, 7, 8, 9, 10); Figure updated (Figure 10) Remove references to "clock" in document Updated VCC Noise and Negative Going Transients text v2.2 template applied; test condition updated (Table 10) Fix error in Ordering Information (Table 12) Revision Details
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M48Z02, M48Z12
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is registered trademark of STMicroelectronics All other names are the property of their respective owners. (c) 2003 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. www.st.com
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